Cheapest return IAH–IST flights, August

AirHint found the following cheapest return flights from Houston (IAH) to Istanbul (IST) in August 2026 (see full year).

Return flights

05 Aug - 14 Aug Delta
02 Aug - 02 Sep Lufthansa
21 Aug - 28 Aug Delta
31 Aug - 14 Sep Spirit Airlines
21 Aug - 28 Aug Turkish Airlines direct
31 Aug - 14 Sep Turkish Airlines direct
28 Aug - 11 Sep Turkish Airlines direct
01 Aug - 15 Aug Delta
03 Aug - 10 Aug Lufthansa
05 Aug - 14 Aug Turkish Airlines direct
01 Aug - 15 Aug Turkish Airlines direct

Also check the deals for one-way flights from Houston to Istanbul in August.

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